I'm currently making a migration from Android to iOS, better said Java to Swift, I got a generic response in JSON, but I'm not able to use it as an object and show it in the storyboard. I'm really new to Swift so I've been stuck for a while.
I've tried ObjectMapper and also JSON decode with no result at all.
I declared this response as I used in Java(Android)
class ResponseObjectMapper<T,R>: Mappable where T: Mappable,R:Mappable{
var data:T?
var message:String!
var error:R?
required init?(_ map: Map) {
self.mapping(map: map)
}
func mapping(map: Map) {
data <- map["data"]
message <- map["message"]
error <- map["error"]
}
}
class UserMapper :Mappable{
var email:String?
var fullName:String?
var id:CLong?
var phoneNumber:String?
var token:CLong?
required init?(_ map: Map) {
}
func mapping(map: Map) {
email <- map["email"]
fullName <- map["fullName"]
id <- map["id"]
phoneNumber <- map["phoneNumber"]
token <- map["token"]
phoneNumber <- map["phoneNumber"]
}
}
In my Android project I use the Gson dependency and I was able to use my JSON as an object
class ErrorMapper:Mappable{
var message:String?
var code:Int?
required init?(_ map: Map) {
}
func mapping(map: Map) {
message <- map["message"]
code <- map["code"]
}
}
This is the Alamofire that gave me the JSON.
func login(params: [String:Any]){Alamofire.request
("http://192.168.0.192:8081/SpringBoot/user/login", method: .post,
parameters: params,encoding: JSONEncoding.default, headers:
headers).responseJSON {
response in
switch response.result {
case .success:
let response = Mapper<ResponseObjectMapper<UserMapper,ErrorMapper>>.map(JSONString: response.data)
break
case .failure(let error):
print(error)
}
}
}
If I print the response with print(response) I got
SUCCESS: {
data = {
email = "vpozo@montran.com";
fullName = "Victor Pozo";
id = 6;
phoneNumber = 099963212;
token = 6;
};
error = "<null>";
message = SUCCESS;
}
and if I use this code I can got a result with key and value but I don't know how to use it as an object
if let result = response.result.value {
let responseDict = result as! [String : Any]
print(responseDict["data"])
}
console:
Optional({
email = "vpozo@gmail.com";
fullName = "Victor Pozo";
id = 6;
phoneNumber = 099963212;
token = 6;
})
I would like to use it in an Object, like user.token in a View Controller, probably I'm really confused, trying to map with generic attributes.
Type 'ResponseObjectMapper<UserMapper, ErrorMapper>' does not conform to protocol 'BaseMappable'
First of all you will need a Network Manager which uses Alamofire to make all your requests. I have made generalized one that looks something like this. You can modify it as you want.
import Foundation
import Alamofire
import SwiftyJSON
class NetworkHandler: NSObject {
let publicURLHeaders : HTTPHeaders = [
"Content-type" : "application/json"
]
let privateURLHeaders : HTTPHeaders = [
"Content-type" : "application/json",
"Authorization" : ""
]
enum RequestType {
case publicURL
case privateURL
}
func createNetworkRequestWithJSON(urlString : String , prametres : [String : Any], type : RequestType, completion:@escaping(JSON) -> Void) {
let internetIsReachable = NetworkReachabilityManager()?.isReachable ?? false
if !internetIsReachable {
AlertViewManager.sharedInstance.showAlertFromWindow(title: "", message: "No internet connectivity.")
} else {
switch type {
case .publicURL :
commonRequest(urlString: baseURL+urlString, parameters: prametres, completion: completion, headers: publicURLHeaders)
break
case .privateURL:
commonRequest(urlString: baseURL+urlString, parameters: prametres, completion: completion, headers: privateURLHeaders)
break
}
}
}
func commonRequest(urlString : String, parameters : [String : Any], completion : @escaping (JSON) -> Void , headers : HTTPHeaders){
print("urlString:"+urlString)
print("headers:")
print(headers)
print("parameters:")
print(parameters)
let url = NSURL(string: urlString)
var request = URLRequest(url: url! as URL)
request.httpMethod = "POST"
request.httpHeaders = headers
request.timeoutInterval = 10
let data = try! JSONSerialization.data(withJSONObject: parameters, options: JSONSerialization.WritingOptions.prettyPrinted)
let json = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
if let json = json {
print("parameters:")
print(json)
}
request.httpBody = json!.data(using: String.Encoding.utf8.rawValue)
let alamoRequest = AF.request(request as URLRequestConvertible)
alamoRequest.validate(statusCode: 200..<300)
alamoRequest.responseJSON{ response in
print(response.response?.statusCode as Any )
if let status = response.response?.statusCode {
switch(status){
case 201:
print("example success")
SwiftLoader.hide()
case 200 :
if let json = response.value {
let jsonObject = JSON(json)
completion(jsonObject)
}
default:
SwiftLoader.hide()
print("error with response status: \(status)")
}
}else{
let jsonObject = JSON()
completion(jsonObject)
SwiftLoader.hide()
}
}
}
}
After this when ever you need to make a request you can use this function. This will take in parameters if any needed and once the request is complete it will execute a call back function in which you can handle the response. The response here will be of SWIFTYJSON format.
func makeNetworkRequest(){
let networkHandler = NetworkHandler()
var parameters : [String:String] = [:]
parameters["email"] = usernameTextField.text
parameters["pass"] = passwordTextField.text
networkHandler.createNetworkRequestWithJSON(urlString: "http://192.168.0.192:8081/SpringBoot/user/login", prametres: parameters, type: .publicURL, completion: self.handleResponseForRequest)
}
func handleResponseForRequest(response: JSON){
if let message = response["message"].string{
if message == "SUCCESS"{
if let email = response["data"]["email"].string{
//Do something with email.
}
if let fullName = response["data"]["fullName"].string{
//Do something with fullName.
}
if let id = response["data"]["id"].int{
//Do something with id.
}
if let phoneNumber = response["data"]["phoneNumber"].int64{
//Do something with phoneNumber.
}
if let token = response["data"]["token"].int{
//Do something with token.
}
}else{
//Error
}
}
}
Hope this helps. Let me know if you get stuck anywhere.